One of Alexander's [most popular _Less Wrong_ posts ever had been about the noncentral fallacy, which Alexander called "the worst argument in the world"](https://www.lesswrong.com/posts/yCWPkLi8wJvewPbEp/the-noncentral-fallacy-the-worst-argument-in-the-world): for example, those who crow that abortion is _murder_ (because murder is the killing of a human being), or that Martin Luther King, Jr. was a _criminal_ (because he defied the segregation laws of the South), are engaging in a dishonest rhetorical maneuver in which they're trying to trick their audience into attributing attributes of the typical "murder" or "criminal" onto what are very noncentral members of those categories.
_Even if_ you're opposed to abortion, or have negative views about the historical legacy of Dr. King, this isn't the right way to argue. If you call Janie a _murderer_, that causes me to form a whole bunch of implicit probabilistic expectations—about Janie's moral character, about the suffering of victim whose hopes and dreams were cut short, about Janie's relationship with the law, _&c._—most of which get violated when you subsequently reveal that the murder victim was a four-week-old fetus.
One of Alexander's [most popular _Less Wrong_ posts ever had been about the noncentral fallacy, which Alexander called "the worst argument in the world"](https://www.lesswrong.com/posts/yCWPkLi8wJvewPbEp/the-noncentral-fallacy-the-worst-argument-in-the-world): for example, those who crow that abortion is _murder_ (because murder is the killing of a human being), or that Martin Luther King, Jr. was a _criminal_ (because he defied the segregation laws of the South), are engaging in a dishonest rhetorical maneuver in which they're trying to trick their audience into attributing attributes of the typical "murder" or "criminal" onto what are very noncentral members of those categories.
_Even if_ you're opposed to abortion, or have negative views about the historical legacy of Dr. King, this isn't the right way to argue. If you call Janie a _murderer_, that causes me to form a whole bunch of implicit probabilistic expectations—about Janie's moral character, about the suffering of victim whose hopes and dreams were cut short, about Janie's relationship with the law, _&c._—most of which get violated when you subsequently reveal that the murder victim was a four-week-old fetus.